Book-joint.



F. REUTER BOOK JOINT.

APPLICATION FILED MAY l4. I918.

1 ,292,880. Patented Jan. 28, 1919.

WITNESSES g a INVENTOI? ATTORNEYS n: non-u mkn cu. run-gum. nmmmu. n c

STATES PATENT OFFICE.

FREDERICK REUTER, OF NEW YORK, N. 55., ASSIGNOR TO JAMES POTT & 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BOOK-JOINT.

Specification of Letters Patent. Patented Jan. 28, 1919.

Application filed May 14. 1918. Serial No. 234,497.

To all whom it may concern:

Be it known that I, FREDERICK REUTER, a citizen of the United States, and a resident of the city of New York,'b0roughof Manhattan, in the county and State of New York, have invented a new and Improved Book-Joint, of which the following is a full, clear, and exact description.

This invention relates to a book joint especially adapted for, although not necessarily limited to, books having flexible covers, and the general object of the invention is to provide an improved joint between the book .and the cover so as to materially strengthen the construction and increase the flexibility of the joint so that there is less strain thereon in opening and closing the cover.

A more specific object of the invention is the provision of a simple, novel and efficient flexible joint between the cover lining, the flyleaf and body of the book formed by pro viding a double flap on the inner edge of the flyleaf and providing a flap on the inner edge of the cover lining, which enters the double flap of the flyleaf and is glued therein, the flyleaf being also glued to the outer page of the book body.

With such and other objects in view, the invention comprises various novel features of construction and arrangement of parts .which will be set forth with particularity in the following description and claims.

In the accompanying drawings, which illustrate one embodiment of the invention and wherein similar characters of reference indicate corresponding parts in all the views:

Figure 1 is a perspective view of a flexible back book with the cover turned open;

Fig. 2 is a sectional view through a portion of the book to show the hinge joints; and

Fig. 3 is an enlarged detail perspective view of the hinge joint.

Referring to the drawings, A designates the cover and B the body of the book, the said cover consisting of a single piece of leatheror other flexible material which constitutes the front and back cover members 1 and 2 and the back 3. On each cover member is a lining l, each lining having along its inner edge a longitudinal flap 5 which forms part of the joint, as will be hereinafter explained. Each flyleaf 6 of the body B has its inner edge formed into a longitudinally folded flap 6 which is at the cover side or face of the flyleaf. The flaps are so designed as to interlock, one embracing the other, but as shown the flaps 5 of the cover linings extend into the folded flaps 6 and are pasted or glued therein so that the cover linings and flyleaves are flexibly attached, both being freely flexible along the respective lines l and 6 Nvhere the flaps are united with the cover lining at and the flyleaf 6 respectively. The inner surfaces of the flyleaves are glued to the outer leaves of the book at the points 7 in the usual manner. This structure is simple and inexpensive to make and has the advantage that it materially strengthens the joint and imparts flexibility thereto.

From the foregoing description taken in connection with the accompanying drawing, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the article which I now consider to be the best embodiment thereof, I desire to have it understood that the article shown is merely illustrative and that such changes may be made when desired as fall within the scope of the appended claims.

I claim 1. In book binding, the combination with a cover member, a lining therefor, a book body, and a flyleaf, of a joint comprising a pair of interlocking flaps formed as integral parts of the lining and flyleaf aforesaid, said flyleaf flap being double and embracing the other flap, and both flaps having their faces free from the lining and flyleaf.

2. In book binding, the combination with a cover member, a lining therefor, a flyleaf, and a book body to which the inner edge of the flyleaf is fastened, of a joint comprising a flap formed on the inner edge of the lining and a flap formed on the inner edge of the flyleaf and attached to the lining flap, the faces of the attached flaps being free from the faces of the lining and flyleaf.

3. In book binding, the combination with a cover member, a book body, a flyleaf element attached to the book body, and a lining element attached to the cover member of a joint comprising a double folded flap formed at the inner edge of one of the said elements and a flap formed at the inner edge of the other element and disposed Within thefold of the first-mentioned flap and fixed thereto, the faces of the'united flaps being free from the lining and flyleaf elements.

4. In book binding, the combination With a cover member, a lining therefor, a fiyleaf, and a book body to which the flyleaf is attached, of a jointcomprising a flap formed on {the inner edge of the lining aforesaid '10 and means to attach said flap to the flyleaf,

leaving the faces of the flap structure free from both the lining and the flyleaf.

Copiesof this patent may be obtained for 5. In book binding, the combination with a cover member, a lining therefor, a book body, and a flyleaf attached to the body, of a joint comprising a flap formed on the inner edge portion of the fiyleaf and means to secure said flap to the adjacent edge portion of the lining aforesaid, said flap structure lying between the flyleaf and the lining and having both faces thereof free from the adjacent faces of the flyleaf and cover lining.

FREDERICK REUTELR.

five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

